diff -r c2ef9095503a -r 067180f57b12 hostsupport/hostopenvg/src/src/sfMask.h --- a/hostsupport/hostopenvg/src/src/sfMask.h Wed Oct 06 17:59:01 2010 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,85 +0,0 @@ -/* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and /or associated documentation files - * (the "Materials "), to deal in the Materials without restriction, - * including without limitation the rights to use, copy, modify, merge, - * publish, distribute, sublicense, and/or sell copies of the Materials, - * and to permit persons to whom the Materials are furnished to do so, - * subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Materials. - * - * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. - * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, - * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR - * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MATERIALS OR - * THE USE OR OTHER DEALINGS IN THE MATERIALS. - */ - -#ifndef __SFMASK_H -#define __SFMASK_H - -#include "VG/openvg.h" - -#ifndef __RIDEFS_H -# include "riDefs.h" -#endif - -#ifndef __RIIMAGE_H -# include "riImage.h" -#endif - -// Contains implementations of some mask operations that are needed in both the -// pixel-pipeline and the blitter. - -namespace OpenVGRI { - -RI_INLINE IntegerColor intMaskOperation(RIuint32 coverage, const IntegerColor& d, VGMaskOperation maskOperation); - -RI_INLINE IntegerColor intMaskOperation(RIuint32 coverage, const IntegerColor& d, VGMaskOperation maskOperation) -{ - RIuint32 newCoverage; - switch (maskOperation) - { - case VG_SET_MASK: - // \note This should work approximately if coverage < 256 always. - // See other cases for proper conversions. - return IntegerColor(0, 0, 0, coverage); // nop. - break; - case VG_UNION_MASK: - { - RIuint32 oldCoverage = d.a; - oldCoverage += (oldCoverage >> 7); - RIuint32 im = 256 - coverage; - RIuint32 ip = 256 - oldCoverage; - newCoverage = 256 - ((im * ip) >> 8); - break; - } - case VG_INTERSECT_MASK: - { - RIuint32 oldCoverage = d.a; - oldCoverage += (oldCoverage >> 7); - newCoverage = (coverage * oldCoverage) >> 8; - break; - } - default: - { - RI_ASSERT(maskOperation == VG_SUBTRACT_MASK); - RIuint32 im = 256 - coverage; - RIuint32 oldCoverage = d.a; - oldCoverage += (oldCoverage >> 7); - newCoverage = (oldCoverage * im) >> 8; - break; - } - } - return IntegerColor(0, 0, 0, newCoverage - (newCoverage >> 8)); -} - -} - -#endif -